为什么我们需要在python中使用"as"来导入

来自python docs:

 import_stmt:    "import" module ["as" name] ("," module ["as" name] )* 
          | "from" module "import" identifier ["as" name]
            ("," identifier ["as" name] )*
          | "from" module "import" "*" 
 module:         (identifier ".")* identifier

为什么我们需要为库定义别名？

有几次.

避免名称冲突

from bisect import bisect
from homework import bisect as my_bisect
# TODO: test if the two functions works similarly

避免长名

import tensorflow as tf

制作模因

import keras as tf